Drier for sand and the like



Dec. 30, 1930. H. w. NAGEL 1,787,280

I I DRI-ER FOR SAND AND THE LIKE Filed Jan. '9. 1930 Patented Dec. 30, 1930 arias PATENT caries HENBYVWILLIAIM NAGEL, or ALLiAIt'CE, OHIO, Assrenon. TO THE COLONIAL IRON worms company, or CLEVELAND, ,OI-IIO, A CORPORATION or 0310 Drains. FoR sAiin AND THE LIKE i hppl ica tionfil'ed January 9,1930. Serial No. 419,549.

. My invention relates to 'drie rs for sand and other similar materialsandmore particularly to improvements infdrie'rs of the general type set forth in my'prior Patent No. 1,346,238, I for-Sand'drying plant, issued July 13, 1920, and which includes spaced heating elements between and over which we'tsand is adapted to pass after leaving a bin, and each of the heating elements having portions having dif- 1 ferent inclinations, and-the inclinations being steepest where the sand first flows and is wettest, and being less steep at points over which the sand passes after being partially dried.

Such 'driers are used particularly for dry- 1s ing sa-nd for spreading upon the rails of traction lines, railroads, and the like to aid inob- .ta'ining traction between the rails and the car. of engine Wheels during rainy or icy Weather. I

In the drier of my aforesaid patent, difficulty has been encountered in maintaining a flow of the sand inthe passageways between the spaced heating elements, there being a tendency of the wet sand to clog the passage 25 ways. i

The objects of the present improvements includethe provision of a novel non-clogging drier for wet sand or like materiahand also include the provision of a drier which ismore ao-economical to operate by reason of novel details of construction" than: driers heretofore inuse. j

v These and other objects are attained by the present invention, as is hereinafter claimed, a? and the invention may be stated in-general terms as including heated walls forming a duct or passageway through which flows the sand to be dried, the sand preferably flowing over a surface having the inclinations setforth 4 in my aforesaid prior patent, and there being preferably heated walls forming ducts communicating with the sand flowing oi er .iithe heatedinclined surface, the communicatmg duet-s being adapted for causing a flow 4.5 of air or the likefover the sand being dried'for carrying away the in-oisture given'olf'therefrom, and means which arep'ref rably v.eom-

men-With themeans for forming the air. ducts,

'and which serve'to maintain a regular flow 59 of sand through the drier. I i

the drying ducts.

A preferred embodin'lent of the improvements is illustrated in the accompanying drawing forming part hereof, in which Figure 1 is a top plan view withportions broken away of a drier, including the present 1mprovements;and' i Fig. 2, an elevation thereof as in the'direction of the arrows 22, Fig. 1, portions being broken away formore clearly illustrating the'details of construction of the improved drier.

Similar numerals refer to similar parts throughout the several views.

Theimproved drier indicated generally at is preferably supported at the upper ends of structural frames 11 and 12. and includes walls forminga bin 13 and a plurality of drv ins ducts 14am]. 14 I The upperend' 15 of the bin has formed therein an inlet opening 16 through which wet sand 17 or like material to be dried is introduced into the bin, and the lower end 18 of the bin has formed therein discharge openings 19 and 19" which communicate with the upper ends of the drying ducts 14 and 14, whereby the sand from the bin flows into Thewallsforming the drying ducts 14 and 14 preferably include a lower heat box 20,

an intermediateheat box 20 and an upper heat box 20".

Each heat box is preferably made of sheet or plate material, and the heat box 20 inchides an upper wall 20a,a lower wall 20?), side walls 200 and 20d, and end walls 206 and 20f, the heat box walls being oined with each other at their side edges as by welding or the like.

' The walls ofthe heat box 20 form a heatcompartment 209, within which is located heating means which preferably comprise an electricresistance element 2a which source is connected as by a cable with a electric power; i

tiimilarly the heatbox 20' 'i'nclude's an upper wall QOa, a lower wall 207), side walls QOG-and 206Z, and end walls 20's and 20f, the heat box walls being joined with each other at their side edges as by welding or the like.

" The walls of'the heat box form a heating compartment 20rg,' within which is 10- "of electric power. f

cat'ed heating means which preferably com-y Prise an electric resistanceelement 24 which is connected as by a cable with a source of electr c power. a

V cnmllarly the heat upper wall 20a,:a lower wall 20"b, side walls 20"0 and 2'O(Z and endwalls 20@ and 20")",the heat box walls being joined with; eachiother attheir side edges as by welding or ,the like. v The walls of the heat box 20? form a heatingcompartment '20 'g', within' which is 10-. cated heating meanswhich preferably com ,of the heat box 20, the lower wall 20'?) of the heat box 20-, and the side plates 2% and 26d;

1. and the'duct 14 is for'medbyfth'e upper wall 20a of the heat box 20,the lower wall 20?) "of the heat box 20 andIthe sidewalls 26c and 26% v V q.

aThe sand flows from" the bininto the duct 14 through the opening 19, and into the bin l tflthrough the opening 19. r ,The duct walls 20a and 20a-over the upper surfaces of which the sand flows, are each variably inclined as illustrated, according to the disclosure of my aforesaid prior patof each is-steepest at the. upper ends ofducts where the sand'first flows and is wettest, and

the inclination of each decreases towards the lower end of theduct untilthe inclination is very little greater than the 'angleof repose tion wall indicated generallyat 27 is located through the ducts, and for simultaneously providing means for carrying away the moisture given off by the drying of the sand, in the duct 1d a longitudinally extending partiand is spaced between the wall 20a and the wall 20b and preferably extends between the ends of the duct and the side plates 260' and 26cl. V 1 V s The partition wall 27 forms a flow passageway 28 in the duct 14 between the underside of the partition wall 27 and the flow surface I of the wall-20a, and ,the partition wall 27 forms a ventilating passageway 29 between the upper side of the partition-wall 27 and the lowersurface of the wall 20Z I The partition wall 27 preferably has a plub02120? includes an rality of openings formed thereinfor pro- :viding communication between the flow-passageway '28 andthe ventilating passageway 29, and for this purpose the partition wall 27 is preferably made of screen material as indicated. V l v The partition wall 27 preferably includes a'lower screen member 30 which is supported preferably at a uniform distance across its entire surface above the upper flow surface of the heated wall'20a, and the distance of the screenmember 30 above the flow surface is relatively small, so thatjthe sand flowing atthe'lower end of the'flow passageway 28 over the flow surfac e. of the heated'wall 20a and beneath the screen memberBO, is relatively shallow in depth enabling easyand rapid rising-of moisturefrom the sandthrough the. screen openings'of the member 30 into the ventilatingpassageway 29. V

The partition wall 27 further includes an upper screen member 31 which is spaced between the wall- 20a and the wall 20b, and angularly thereto, and. which extends between the side plates 260 and'26cl and from the upper end of the duct 14, preferably at a position closer to the wall 20'?) than to thewall 20a, angularly downwardly therefrom and overlapping the lower screen member 30 to a transversely extending gate member. 32. The lower edge of the gate member-"32 is preferably located at the level-of thescreen member 30, and the lower end of the upper screen member 31 is secured to the gate member 32 at a position preferably closer to the wall 20a than to the wall 20'b, whereby the upper end 33 of the flow passageway 28 is V progressively reduced" in cross-sectional area ent and the inclination of the upper surfaces" from the opening 19 to the gate member 32. V

The sand in the upper end 33 ofthe flow passageway 28 is the wettest, and the drying of the sand commencesas it flows through the upper enlarged end 33 of the flow passageopenings of the screen member 31 into'the ventilating passageway 29.

In a similar manner, a partition wall 2 7,

divides the duct 14' into a flow passageway 28 and a ventilating passageway 29 5 and the transversely extending gate member 32" similar in arrangement and function to the gatemember32. a.

An outlet duct 34 is formed in the lower end 18 of the bin-13, preferably by a downwardly opening channel member 34,which way, and the moisture given'olf in the flow passageway upper end 33 passes through the sageways and the outlet duct.

.1 claim: i p V A dr er for drying material such as sand and the like, the drier including a heating'inember having a surface overwhich. the

material may fiow,means for delivering the mater alupon the surface, walls forming a 'material flow duct, theinner Surface of one of the duct'wall-s including the heating member surface over which the material flows, and

1 walls forming aventilating duct adjacent to the flow duct. 1 ;2. A drier fordrymg material such as sand and the like, the drier including a heating member having an. inclined surface Over whichthematerial may flow, means for delivering the material upon the surface, walls forming a material flow duct, the inner surface of one of the ductwallsmcludmg the heating. member surfaceiolver'whi h the material flows, and walls forming a Ventilating ductadjacent tothefiow duct. j

73. A drier for drying material such as sand and the like, the drier including a heating memberhavinga variably inclined surface over which the material may flow, means for delivering the material upon the surface, walls forming a material flow duct, the inner surfacelofone of the duc'twalls including the heating member surface over which the mate rial-flows, andwa lls forming a ventilating duct adjacent to theflow duct.

4.,1A drier for drying material. such as sand andthe like, the drierincluding a plurality of uwfalls, one of the walls having a surface over which the material may flow, means for heating the flow surface wall, means for deiivering the material upon the flow surface, an-

other of the walls being a partition. wall located and extending-between thefiow surface the ventilating passageway.

5 i 5,; A-drier for drying material such as sand {and the like, the drier including a plurahty of walls, one of the walls having a surface eveiunhi jlrthe ma er al may flew, means for heating the flow surface wall, means for delivering the material upon the flow surface, a partition wall located and extending between the flow surface wall and an opposite wall, and there being formed a flow passageway between the heat wall and the partition wall and a ventilating passageway between the partition wall and the opposite wall, and there being an opening formed in the partition wall and communicating between the flow passageway and the ventilating passagewa 6. A drier for drying material such as sand and the like, the drier including a plurality of Walls, one of the walls having a surface over which the material may flow, means for heating the flow surface wall, means for delivering the material upon the flow surface, a partition wall located and extending between the flow surface wall and an opposite wall, and there being formed a flow passageway between the heat wall and the partition wall and a ventilating passageway between the partition wall and the 0pposite wall, and there being openings formed in the partition wall and communicating between the flow passageway and the ventilating passageway. I

7. A. drier for drying material such as sand and the like, the drier including a plurality of walls, one of the walls having a surface over which the material may flow,

means for heating the, flow surface wall, means for delivering the material upon the flow surface, another of the walls being a partition'wall located and extending between the flow surface wall and an opposite wall, and there being formed a flow passageway between the heat Wall and the partition wall and a ventilating passageway between the partition wall and the opposite wall, and there being an opening formed in one of the drier walls and communicating between the flow passageway and the ventilating passageway, walls" forming an outlet duct, and; the ventilating passageway communicating at its upper end with the outlet duct.

8; A drier for drying material such as sum and the like, the drier including a plurality of walls, one of the walls having a surface over which the material may flow, means for heating the. flow surface wall, means for delivering the material upon the flow surface, a partition walllocated'and extending between the 'flo'w surface wall and an opposite wall, and there being formed a flow passagewaybetween the heat wall andthe partition wall and a' ventilating passageway between the partition wall and the opposite wall, and there being an'opening formed in the partitionlwall and communicating between the flow passageway and the ventilating passageway, walls forming an outlet duct, and the ventilating passageway communicating at itsupper end, with theoutletduct.

9. A drier for drying material such'as sand and the likeythe drier including a plurality.

of walls, one of the walls having a surface over which the material may flow, means for heating the flow surface wall, nie'ansfor delivering the material upon the flow surface,

a partition wall located and extending between the flow surface wall and an opposite wall, and there being formed a flow passageway between the-heat walland the partition wall and a .ventilatim assa ewa 1 between the partitionwall and theopposite wall, and

there being openings formed in the partition wall and' commumcat ng between the flow ,passageway" and the ventilating passageway,

walls forming an ,outlet' duct, and the-yen:

Y tilating passageway communicating at its up per endwlth the outletduct: i alsuch as 10. A;, drier for drying materi I sand andthehke, the drier includ nga heatingmember having a surface over WillCll the material may flow, means for delivering the inaterialupon thesurface, walls forming niaterialflow duct-,the inner surface of'one of theductwalls including the heating 1ll81'l1' ber surface over, which the material flows, walls forming a ventilating .duct j adacent I to the 'flowduct, and means'controlling the rate of flow of i 11. A.dr1er for drying materialsueh' as sandand the like, the drier including a heat-- ing member having aninclined surface over which the material may flow, meansfor delivering'the material upon the surface, walls formingfa material flow duct, the

surface' of one of the duct wallsinclud ng inner the heating member surface over which the material flows, walls fornnn'ga "ventilating duct adjacent tothe 'flow duct, and means controlling the rate of flow of materialover' the flow surface.- 1 r 12. A drier for'drying material such as sand andthe like, the drier includin'ga heatingimemberhaving avafiablfy inclined sur- "face over. which the ,material may flow, wnieans for delivering the material upon-the surface, walls forming a material flow duct, the inner surface of one of the duct walls including, the heating member surface over which the materialflows, walls formmga ventilating duct adjacent to the flow duct and means controlling the rate of flow of material over the flow surface.

13. A drier for drying material such as sand and the like, the drier including a plu- "rality of walls; one of the walls having a surface over which the material may flow, means for heatmg'the flow surface wall,

means for delivering the material upon the flow'surface,another of the walls being a partition wall located and extending between the flow surface wall and an opposite wall, and there being formed a flow passage way between the heat 'wall and the partition material over the flow ,sur-

wall and a ventilating passageway between the partition wall and the opposite wall, and

there being an opening formed in one of the drier walls and communicating between the flow passageway and the ventilating pas-1 sageway, and means controlling the rate of flow of material over the fiow surface.

1a. A drier for dryingimaterial such as sand and the like, the drier including a plurality of walls, one of the walls having a surface over which the material may flow,

means for heating the flow surface wall, means for delivering the material upon the how surface, a partition wall located and extending between the flow surface wall and an opposite wall; and there being'formed a flowlpassageway betweenthe heat'wall and the partitionwall and a ventilating passage way. between the partition wall and the opposite wall, and there being an;- opening formed in the pa'rtition wall and "communr eating between the flow passageway and the ventilating passageway, and means control ling the rate. of flow of material. over the flow surface.

15'. A drier for drying material 'such'as sandand the like, the drier including a phi 'rality of 'w alls,'one of:the walls having .a

surface, over which the material may flow,

means: for heating the flowsurface'iwall, means for delivering the materlal upon: the

i low-surface, a'partition wall locatedancl ex" tending-between the flowsurfacezwall and an oppositewall, "and there being formed a i'lowpassageway between the heat-wall and he partition wall and a ventilating passage- ,way'between the vpartitionwall and the oppositewall, and there being openings formed in the partition wall and communicating between the flow passageway and the ventilating passageway, andmeans controlling the rate of flow of material over the flow surface. m

16. Adrier for'dryingmaterial such as sand and the like, the drier including a plurality of walls, one of the walls havinga surface over which the material may flow, means for heating the How surface wall, means for delivering the material upon the flow surface,

another of the walls being a partition wall 7 l7. Adrier for drying material such as no V 7 sand and the like, the drier'including a plurality of walls, one oft the walls having a surfaceover which the material may flow, means for heating the flow surface Wall, means for delivering the material upon the "flow surface, a partition wall located and extending between the flow surface wall and an opposite wall, and there being formed a flow passageway between the heat wall and the partition wall and a ventilating passageway between the partition wall and the opposite wall, and there being an opening formed 1n the partition wall and coinmunicatlng between the flow passageway and the ventilating passageway, walls forming an outlet duct,

the ventilating passageway communicating at its upper end with the outlet duct,

and means controlling the rate of flow of material over the flow surface.

18'. A drier for drying material such as sand and the like, the drier including a plurailty of walls, one of the walls having a surface over which theinaterial may flow,

-means for heating the flow surface wall,

means for delivering the material uponthe flow surface, a partition wall located and extending between the flow surface wall and an opposite wall, and there being formed a flow passageway between the heat wall and the partition wall and aventilating passage-.

way between the partition wall and the opposite wall, and there being openings formed in the partition wall and communicating between the flow passageway and the ven-- tilating passageway, walls forming an outlet duct, the ventilating passageway communicating at its upper end with the out let duct, and means controlling the rate of flow of material over the flow surface.

' 19. A. drier for drying material such as sand and the like, the drier including a plurality of walls, one of the walls having a surface over which the material may flow, means for heating the flow surface wall, means for deliveringthe material upon the flow surface, apartition wall located and ex.

tending between the flow surface wall and' 7 and an opposite wall, a second partition wall angularlydisposed to and overlapping the firstpartition wall, there being formed a how passageway between the heat wall and the partition walls and a ventilating passageway between the partition walls and the V vopposite wall, and there being an opening 5 formed in one partition wall and communii eating between the flow ventilatingpassageway. In testimony that I claim" the above, I

passageway and the have hereunto subscribed my name. HENRY WILLIAM NAGEL. 

